Question

Inverse of the function f(x) = 2x + 5?

Answer 1

x - 5

y = --------------

2

Explanation:

1. Replace "f(x)" with "y:" y = 2x + 5

2. Interchange x and y: x = 2y + 5

3. Solve this result for y:

2y = x - 5, or

x - 5

y = --------------

2

Answer 2

`y^(-1) =(1)/(2) x-(5)/(2)`

Explanation: